Tidy up warnings and deprecated usage:

fix #1290

* BOOST_ASIO_NO_DEPRECATED=1 is now set
* Fix various warnings from the Boost regression test matrix
* Fix a bug in advanced servers when checking for a timeout

test/beast/websocket/write.cpp

@@ -10,7 +10,7 @@
 // Test that header file is self-contained.
 #include <boost/beast/websocket/stream.hpp>
 
-#include <boost/asio/io_service.hpp>
+#include <boost/asio/io_context.hpp>
 #include <boost/asio/strand.hpp>
 
 #include "test.hpp"
@@ -659,11 +659,14 @@ public:
         // it is instantiated.
         {
             boost::asio::io_context ioc;
-            boost::asio::io_service::strand s{ioc};
+            boost::asio::strand<
+                boost::asio::io_context::executor_type> s(
+                    ioc.get_executor());
             stream<test::stream> ws{ioc};
             flat_buffer b;
             ws.async_write(boost::asio::const_buffer{},
-                s.wrap(copyable_handler{}));
+                boost::asio::bind_executor(s,
+                    copyable_handler{}));
         }
     }